1 of 46

Course: Pediatric Nursing

Topic: Nursing care of Child with Gastrointestinal Disorder Part II

The Nurses International Community

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

2 of 46

COPYRIGHT

© 2013-2024 Nurses International (NI). All rights reserved. No copying without permission. Members of the Academic Network share full proprietary rights while membership is maintained.

NI Privacy Policy and Terms of Use.

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

3 of 46

Module Goals

Learners will be able to:

  • Identify common gastrointestinal illnesses of childhood including signs and symptoms (oral thrush, appendicitis, GERD, PUD, constipation).
  • Identify risk factors associated with the above gastrointestinal disorders.
  • Describe common diagnostic procedures for the above gastrointestinal disorders and nursing implications.
  • Explain common medical treatments for children with the above gastrointestinal disorders and nursing implications.
  • Discuss the nursing management of a child with the above gastrointestinal disorders.

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

4 of 46

Oral Thrush or Candidiasis, Cause, Diagnosis

Oral candidiasis or thrush is an infection of the oral cavity

  • Vaginal Candida infections can colonize neonates as they pass through the birth canal
  • Neonates and infants may contract the disease through colonized breasts when breastfeeding

Cause: Candida albicans

Diagnosis:

  • Inspection of the inside of the mouth and throat
  • throat or mouth swab

CDC, 2021

NHS, 2020

Taylor & Raja, 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

5 of 46

Candidiasis: Risk Factors

Infants, especially younger than 1 month of age, and with at least one of these factors

  • Very low birth weight
  • Passed through the birth canal of a mother with a yeast infection
  • Has taken antibiotics
  • Uses inhaled corticosteroids, such as for asthma
  • Uses a pacifier frequently
  • Has a weak immune system

University of Rochester Medical Center, n.d.a

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

6 of 46

Candidiasis: Signs and Symptoms

  • White patches on the inner cheeks, tongue, roof of the mouth, and throat
  • Redness or soreness in the mouth
  • Cotton-like feeling in the mouth
  • Loss of taste
  • Pain while eating or swallowing
  • Cracking and redness at the corners of the mouth

CDC, 2021

NHS, 2020

Taylor & Raja, 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

7 of 46

Candidiasis: Treatment

  • Depends on child’s age, severity, symptoms and general health.
  • Healthy infants with mild thrust may not need treatment.
  • Severe cases are treated with antifungals (clotrimazole, miconazole, or nystatin).
  • If breastfeeding, both mother and baby are treated with antifungals.
  • Good oral hygiene.
  • Sterilization of toys, pacifiers, and teethers.

CDC, 2021

NHS, 2020

Taylor & Raja, 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

8 of 46

Candidiasis: Nurses’ Role

  • Ensure good oral hygiene; demonstrate practice with return demonstration by client or caregivers.
  • Administer medications for inpatients: Teach how to swill and swallow.
  • Provide counseling and support.
  • Assess oral cavity frequently and note any changes: color, bleeding, ulceration, exudate.
  • Monitor nutritional and hydrational status.
  • Provide soft diet with severe dysphagia.
  • Relieve pain (medication)/discomfort at least an hour before meal.

Nurses Lab, 2022

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

9 of 46

Client Education

Education for client or caregivers about importance of:

  • Good oral health
  • Rinse or brushing teeth after using using inhaled corticosteroids
  • Wash hands before and after caring for the child
  • Hand washing in older children
  • Sterilize bottle or pacifier after each use
  • Do not wipe off the white patches as they may bleed
  • Brush gums and tongue of babies with a soft toothbrush

CDC, 2021

NHS, 2020

Taylor & Raja, 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

10 of 46

Critical Thinking Question

A nurse is explaining to parents how the antifungal drug i.e Nystatin should be taken. The mother of of the child asks the nurse what “Swish and Swallow” means?

How would the nurse respond “Swill and Swallow”?

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

11 of 46

Appendicitis

  • Inflammation of appendix
  • Rare in children < 3 years of age
  • Very difficult to diagnose, especially in younger children therefore, the index of suspicion should be high

Causes:

  • Obstruction of the opening of the appendix
  • The blockage may be caused by mucus, stool, or parasites
    • Or by a bend or twist in the appendix itself

Government of Canada, 2013; University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

12 of 46

Appendicitis: Risk and Diagnostic Tests

Risk:

  • Children between the ages of 10 and 30 years
  • Children with cystic fibrosis
  • Family history of appendicitis

Diagnostic Tests:

  • Blood test: WBC count
  • Urinalysis to rule out urinary tract infection
  • Blood cultures if fever is present and diagnosis uncertain
  • Ultrasound and CT scan (if available)

Government of Canada, 2013

University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

13 of 46

Appendicitis: Signs and Symptoms

Physical Findings:

Presentation depends on child’s age, evolution of disease process

  • Temperature mildly elevated
  • Tachycardia (although heart rate may be normal in early stages)
  • Variable level of distress
  • Change in behavior
  • Loss of appetite
  • Swollen abdomen in younger children

Government of Canada, 2013; University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

14 of 46

Appendicitis: Signs and Symptoms

Abdominal Examination

  • Bowel sounds variable: hyperactive to normal in early stages, absent in later stages
  • Localized tenderness in right lower abdominal quadrant
  • Muscle guarding in right lower quadrant
  • Rebound tenderness may be present
  • Obturator sign
  • Psoas sign

Government of Canada, 2013; University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

15 of 46

Appendicitis: Treatment and Management

  • Appendicitis is an medical emergency
  • Prompt surgery prevents rupture of the appendix
  • Treated with antibiotics and surgery
  • Surgery (appendectomy) to remove appendix
  • Mild cases of appendicitis may be treated with antibiotics alone
  • Goals of treatment is to maintain hydration and prevent complications

Government of Canada, 2013; University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

16 of 46

Appendicitis: Treatment and Management

Adjuvant Therapy

  • Initiate intravenous therapy with normal saline

Nonpharmacologic Interventions

  • Bed rest
  • Nothing by mouth
  • Possible nasogastric tube upon consultation

Pharmacological Interventions:

  • Broad spectrum antibiotics

Government of Canada, 2013

University of Rochester Medical Center, n.d.b

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

17 of 46

Appendicitis: Nurses’ Role

  • Assess and relieve pain (pharmacological/ non-pharmacological)
  • *Do not apply heat to the site as it could lead to rupture
  • Prevent fluid volume deficit
  • Maintain clean environment to prevent infections
  • Reduce clients and caregivers anxiety by explaining treatment plan
  • Encourage the child to walk if able, if not provide SCD pumps, TED hose to prevent DVTs
  • Encourage fluid intake, monitor intake and output and bowel movements

Jones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

18 of 46

Critical Thinking Question

An 14 year old is admitted to the ward with appendicitis. Which statement by the patient requires immediate nursing intervention?

  1. “The pain is becoming worse and it is making me nauseous."
  2. "The pain sits on the right lower quadrant and it hurts when pressed and released"
  3. "The pain has reduced after I applied a heating pad on the abdomen."
  4. The pain is worse when I lie supine position and raise my right leg up."

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

19 of 46

Gastroesophageal Reflux Disease (GERD)

  • Physiologic conditions or pathologic disease causes retrograde movement of gastric contents into the esophagus, which results in injury to the esophagus and extra-intestinal disease.
  • This causes GI, respiratory and/or neurobehavioral manifestations.
  • In children, the peak age at onset is 1-4 months of age.

Risk: Children with neurologic injury are more likely to have GERD

Government of Canada, 2013

Rybak et al., 2017

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

20 of 46

GERD: Cause

Causes: Disturbance of the normal functioning of the esophagus & related structures .

  • Gastric Dysfunction: Delay in gastric emptying, fundus does not relax.
  • Increased Relaxation of Lower Esophageal Sphincter: Transient relaxation of lower esophageal sphincter.
  • Esophageal Dysfunction: Impairment of esophageal clearance of refluxate.
  • Aggravating Factors: Supine position & certain foods and medications.

Government of Canada, 2013

Rybak et al., 2017

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

21 of 46

GERD: Diagnostic Tests

  • Hemoglobin level (if there is a concern about anemia).

  • Chest x-ray (if available), to rule out aspiration or recurrent pneumonia.

Government of Canada, 2013

Rybak et al., 2017

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

22 of 46

GERD: Signs and Symptoms

In infants:

Gastrointestinal

  • Failure to thrive
  • Malnutrition
  • Esophagitis
  • Feeding problems
  • Irritability
  • Hematemesis
  • Anemia

Government of Canada, 2013

Rybak et al., 2017

Respiratory

  • Apnea (obstructive)
  • Chronic cough
  • Wheeze
  • Pneumonia (chronic or recurrent)
  • Cyanotic spells
  • Others (for example, stridor, hiccups, hoarseness)

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

23 of 46

GERD: Signs and Symptoms

Children and Adolescents

Gastrointestinal

  • Chest pain (heartburn)
  • Dysphagia (difficulty swallowing)
  • Halitosis
  • Odynophagia
  • Water brash
  • Hematemesis
  • Iron deficiency anemia

Government of Canada, 2013

Rybak et al., 2017

Respiratory

  • Recurrent or chronic pneumonia
  • Recurrent wheeze (GERD is a trigger for reactive airways disease or asthma)
  • Chronic cough
  • Others (for example, stridor, hoarseness)

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

24 of 46

GERD: Treatment & Management

Pharmacological:

  • Acid reducing agents: Aluminium-magnesium hydroxides, proton-pump inhibitors
  • Prokinetic agents: Domperidone

Non-pharmacological interventions:

  • Client education
  • Positioning
  • Feeding

Note: Surgery may be necessary in severe cases

Government of Canada, 2013

Rybak et al., 2017

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

25 of 46

GERD: Nurses’ Role

  • Raise the head of the child's bed 15 to 20 degrees
  • Have the child eat smaller but frequent meals
  • Avoid foods that trigger GERD ( chocolate, spicy food, oranges, tomatoes)
  • Abstain from food 2 to 3 hours before bedtime
  • Administer medicines as prescribed
  • Proper client education on feeding, positioning
  • Proper monitor and follow ups

Government of Canada, 2013

Rybak et al., 2017

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

26 of 46

Case Study

During a home health visit, a nurse is helping a mother of 13 years old develop a list of foods to avoid GERD in her child.

Which food items should be avoided?

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

27 of 46

Peptic Ulcer Disease (PUD) in Children

A peptic ulcer is erosion of the lining of the stomach or duodenum by the stomach acid or digestive enzymes.

  • Causes:
    • *Helicobacter pylori (H. pylori)
    • *NSAIDS medications
    • Bacteria infection, exposure to smoking, caffeine, stress, acid and pepsin, chemotherapy
  • Risk Factors:

Factors that make H.Pylori infection more likely (sharing bed, living in crowded environment, genetics)

Stanford Children's Health, n.d.

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

28 of 46

PUD: Diagnosis

  • Upper gastrointestinal series: X-ray -swallow metallic liquid (barium).

  • Endoscopy: To visualize the lining of upper GI tract and take biopsies for test.

  • Blood, breath, stomach tissue and stool: Lab test for the presence of H. Pylori

Stanford Children's Health, n.d.

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

29 of 46

PUD: Signs and Symptoms

  • Gnawing pain
  • Burning pain
  • Aching
  • Soreness
  • Feeling of hunger
  • Infants, fussy and irritable during or after feedings
  • Young children many not have typical symptoms. May have abdominal pain and vomiting

Stanford Children's Health, n.d.

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

30 of 46

PUD: Treatment and Management

Treatment depends on the child’s age, severity of the condition, and general health condition

The basic treatment includes:

  • Lifestyle change: No smoking
  • Medicine: Antibiotics, H2 -blockers, PPIs
  • Surgery: If child does not respond to the medication

Stanford Children's Health, n.d.

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

31 of 46

PUD: Nurses’ Role

  • Take appropriate history related to chest and abdominal pain
  • Detailed assessment of child's eating habits
  • Encourage the use of nonpharmacological methods, including change in diet, biofeedback, walk after the meals, and elevation of the head end of the bed
  • Avoid non-steroidal anti-inflammatory drugs (NSAIDs) such as piroxicam, ibuprofen, aspirin
  • Encourage smoking cessation
  • Administer therapy as prescribed

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

32 of 46

PUD: Nurses’ Role

  • Manage pain, anxiety
  • Maintain adequate nutrition
  • Monitor intake and output
  • Regularly monitor hemoglobin and hematocrit levels
  • Assess the characteristic of vomitus
  • Educate child and care providers about the management and prevention of PUD

Ocasio Quinones et al., 2021

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

33 of 46

Constipation

  • Infrequent passage of hard and dry stool
  • Common in children in the first year of life
  • Constipation is a symptom not a diagnosis
  • It has an underlying cause

Causes:

  • Dietary: cow’s milk, low fiber diet, inadequate fluid intake
  • Organic: Diabetes mellitus
  • Gastrointestinal anomalies: masses, Hirschsprung’s diseases

Government of Canada, 2013

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

34 of 46

Constipation: Diagnosis and Assessment

Diagnostic Tests

  • Stool for blood
  • Check urine (culture and sensitivity) to exclude UTI

Assessment

  • Assess height, weight
  • Assess abdomen for tenderness, mass and fecal masses
  • Examine rectum for size, presence of stool, reflex, tone, anal fissure, anal placement

Government of Canada, 2013

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

35 of 46

Constipation: Management

Nonpharmacologic Interventions

Interventions depend on age and severity of constipation.

  • Extra daily feeding of 2-4 oz. of water in addition to usual formula or breast milk
  • Infants (> 6 months), toddlers and older children: prune juice, apple juice or pear juice;increase fruits and vegetables in diet
  • Increase dietary fiber
  • Increase fluid intake, particularly water

Government of Canada, 2013

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

36 of 46

Constipation: Pharmacological Interventions

Medications used only if:

  • Organic pathology has been ruled out
  • An infant or child is in distress
  • For infants and small children use Glycerin suppository

In older children:

  • Oral suspension of magnesium hydroxide
  • Lactulose
  • Physician should be consulted before use

Government of Canada, 2013

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

37 of 46

Critical Thinking Question

Which of the following statement made the mother indicates her child might be at the risk of having constipation?

  1. “I have switched to cow’s milk and my 11 months baby loves to drink a whole bottle of milk.”
  2. “I have started introducing green leafy vegetables to my 9 months old child.”
  3. “My baby is 8 months and still breastfeeding and gets home cooked chicken soup as supplement.”
  4. “I have 13 months old baby who loves apple and prunes along with the formula.”

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

38 of 46

Red Flags

All of the signs and symptoms of gastrointestinal disorders are considered as red flag in child and it needs immediate medical help.

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

39 of 46

Cultural Considerations

Religion, culture, beliefs, and ethnic customs can influence how families understand and use health concepts:

  • Health beliefs: In some cultures talking about a possible poor health outcome will cause that outcome to occur.
  • Health customs: In some cultures family members play a large role in health care decision-making.
  • Ethnic customs: Differing gender roles may determine who makes decisions about accepting & following treatment recommendations.

AHRQ, 2020

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

40 of 46

Cultural Considerations (Continued)

Religion, culture, beliefs, and ethnic customs can influence how families understand and use health concepts:

  • Religious beliefs: Faith and spiritual beliefs may effect health seeking behavior and willingness to accept treatment.
  • Dietary customs: Dietary advice may be difficult to follow if it does not fit the foods or cooking methods of the family.
  • Interpersonal customs: Eye contact or physical touch may be ok in some cultures but inappropriate or offensive in others.

AHRQ, 2020

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

41 of 46

Cultural Considerations: Examples

  • Children with Hispanic and African-American backgrounds have a higher risk of developing Peptic Ulcer Disease.

  • IBS, bloating, constipation, chronic functional abdominal pain, and pelvic floor dysfunction, are more prevalent in women than men.

Chuah & Mahadeva, 2018

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

42 of 46

References:

  • Chuah, K. H., & Mahadeva, S. (2018). Cultural Factors Influencing Functional Gastrointestinal Disorders in the East. Journal of neurogastroenterology and motility, 24(4), 536–543. https://doi.org/10.5056/jnm18064

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

43 of 46

References:

  • Jones MW, Lopez RA, Deppen JG, et al. (Updated 2021 Sep 9). Appendicitis (Nursing). StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK568712/

  • Ocasio Quinones GA, Woolf A, Haddad LM. (Updated 2021 Apr 26). Duodenal Ulcer (Nursing) StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK568678/

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

44 of 46

References:

  • Rybak, A., Pesce, M., Thapar, N., & Borrelli, O. (2017). Gastro-Esophageal Reflux in Children. International journal of molecular sciences, 18(8), 1671. https://doi.org/10.3390/ijms18081671

  • Taylor, M., Raja, A. (2021 Jul 25). Oral Candidiasis. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK545282/

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

45 of 46

References:

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

46 of 46

Please go to

My Learning Experience

to provide feedback on your experience.

Thank you, and come back soon!

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.

© 2013-2024 Nurses International (NI).

Contact info: info@nursesinternational.org

© 2013-2024 Nurses International (NI) and the Academic Network. All rights reserved.